A solid blow to the testicles ends the fight. It ends the fight. If you have ever received a blow to the testicles, you know that it takes all the fight out of you, you fall to the ground, it takes a while to get back up and you move really slowly and cautiously for the rest of the day.

The only realistic depiction of a blow to the testicles I have seen is from 'An Officer and a Gentleman' where Luis Gossett Jr falls to the map and blows snot bubbles.